Fine structure of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>α</mml:mi></mml:math>decay in odd nuclei

Mirea, M.

doi:10.1103/physrevc.63.034603

Cited by 29 publications

(37 citation statements)

References 18 publications

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“…These energies are calculated within the Woods-Saxon two center model and the internuclear is considered to be 10 6 m/s. This velocity gives a tunneling time of 10 −21 s. A similar value resorts in calculations devoted to alpha [25] and cluster decays [26][27][28]. This internuclear velocity is in agreement with the results obtained in Ref.…”

Section: Resultssupporting

confidence: 81%

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Intrinsic energy partition in fission

Mirea

2013

EPJ Web of Conferences

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Abstract. The intrinsic energy partition between two complementary fission fragments is investigated microscopically. The intrinsic excitation energy of fission fragments is dynamically evaluated in terms of the time-dependent pairing equations. These equations are corroborated with two conditions. One of them fixes the number of particles and the other separates the pairing active spaces associated to the two fragments in the vicinity of the scission configuration. The excitation energy in a wide distribution of fission fragments is calculated for the 234 U parent nucleus.

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Section: Resultssupporting

confidence: 81%

“…They were developed in the last years [12] to take into account the Landau-Zener effect [13]. the pair breaking mechanism [14], and the dissipation in the effective mass [15].…”

Section: Modelmentioning

confidence: 99%

Intrinsic energy partition in fission

Mirea

2013

EPJ Web of Conferences

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“…Up to now, only the radial coupling was used to explain the intermediate structure of the cross-section. It is possible to have better results by taking into account the Coriolis mixing and the residual interactions by using evolved forms for the system of coupled equations that describes the microscopic motion [25,33].…”

Section: Summary and Discussionmentioning

confidence: 99%

“…The realistic two-center diagram presented before provides an instrument to study the role of individual orbitals during the disintegration process in a similar way as the study of nucleus-nucleus collisions [22,23] or the alpha-and cluster-decays [24,25]. Levels with same quantum numbers associated to some symmetries of the system cannot cross during the disintegration process and exhibit avoided level crossing.…”

Section: Single-particle Excitationsmentioning

confidence: 99%

Landau-Zener effect in fission

et al. 2007

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Abstract. The structures observed in the sub-threshold neutron-induced fission of 232 Th were investigated employing a recent developed model. Theoretical singleparticle excitations of a phenomenological two-humped barrier are determined by solving a system of coupled differential equations for the motion along the optimal fission path. A rather good agreement with experimental data was obtained using a small number of independent parameters. It is predicted that the structure at 1.4 and 1.6 MeV is mainly dominated by spin 3/2 partial cross-section with small admixture of spin 1/2, while the structure at 1.7 MeV is given by a large partial cross section of spin 5/2.

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“…The probability to jump from one level to another can be evaluated by quantifying the Landau-Zener effect with a system of microscopic equations of motion as realized in ref. [9]. Solving the coupled channel equations system, the amplitudes of the single-particle wave functions in the nuclear level distribution is determined.…”

Section: The Hybrid Modelmentioning

confidence: 99%

Fine structure in the intermediate resonance region of the neutron induced fission cross section

Mirea¹,

Tassan‐Got

2007

Nd2007

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Abstract. Recently, the fine structure of the 0.7 MeV resonance in the 230 Th neutron-induced cross section was investigated within the hybrid model. A very good agreement with experimental data is obtained. It is suggested that fine structure of the cross section quantify the changes of the intrinsic states of the nucleus during the disintegration process. Due to internal excitations produced in the region of the outer barrier, where the density of single-particle states is enhanced, new transitions levels are produced. These transitions levels cause β-resonances very close in energy. A way to introduce phenomenologically this phenomenon in cross section calculations is presented.

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Fine structure ofαdecay in odd nuclei

Cited by 29 publications

References 18 publications

Intrinsic energy partition in fission

Intrinsic energy partition in fission

Landau-Zener effect in fission

Fine structure in the intermediate resonance region of the neutron induced fission cross section

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